CVE-2026-23178
Description
In the Linux kernel, the following vulnerability has been resolved: HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report() `i2c_hid_xfer` is used to read `recv_len + sizeof(__le16)` bytes of data into `ihid->rawbuf`. The former can come from the userspace in the hidraw driver and is only bounded by HID_MAX_BUFFER_SIZE(16384) by default (unless we also set `max_buffer_size` field of `struct hid_ll_driver` which we do not). The latter has size determined at runtime by the maximum size of different report types you could receive on any particular device and can be a much smaller value. Fix this by truncating `recv_len` to `ihid->bufsize - sizeof(__le16)`. The impact is low since access to hidraw devices requires root.
How to fix
- Linux Linuxf9c9ad89d845f88a1509e9d672f65d234425fde9, cff3f619fd1cb40cdd89971df9001f075613d219, 786ec171788bdf9dda38789163f1b1fbb47f2d1e, 2124279f1f8c32c1646ce98e75a1a39b23b7db76, 2497ff38c530b1af0df5130ca9f5ab22c5e92f29 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 85df713377ddc0482071c3e6b64c37bd1e48f1f1 ≤ v < f9c9ad89d845f88a1509e9d672f65d234425fde9, 85df713377ddc0482071c3e6b64c37bd1e48f1f1 ≤ v < cff3f619fd1cb40cdd89971df9001f075613d219, 85df713377ddc0482071c3e6b64c37bd1e48f1f1 ≤ v < 786ec171788bdf9dda38789163f1b1fbb47f2d1e, 85df713377ddc0482071c3e6b64c37bd1e48f1f1 ≤ v < 2124279f1f8c32c1646ce98e75a1a39b23b7db76, 85df713377ddc0482071c3e6b64c37bd1e48f1f1 ≤ v < 2497ff38c530b1af0df5130ca9f5ab22c5e92f29, 5.18 | f9c9ad89d845f88a1509e9d672f65d234425fde9, cff3f619fd1cb40cdd89971df9001f075613d219, 786ec171788bdf9dda38789163f1b1fbb47f2d1e, 2124279f1f8c32c1646ce98e75a1a39b23b7db76, 2497ff38c530b1af0df5130ca9f5ab22c5e92f29 |
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